Abu Hurairah (May Allah be pleased with him) reported:
A man asked the Prophet (ﷺ) to give him advice, and he (ﷺ) said, "Do not get angry." The man repeated that several times and he (ﷺ) replied (every time), "Do not get angry."[Al- Bukhari].
Arabic/English book reference: Book 1, Hadith 639